Just upgraded from 6.18 and noticed my date and time are off.
I used the auto upgrade and then manually copied 6.19npk into winbox and rebooted.
/system package> pr
Flags: X - disabled
# NAME VERSION SCHEDULED
0 routeros-mipsle 6.19
1 system 6.19
2 X wireless-fp 6.19
3 X ipv6 6.19
4 wireless 6.19
5 hotspot 6.19
6 dhcp 6.19
7 mpls 6.19
8 routing 6.19
9 ppp 6.19
10 security 6.19
11 advanced-tools 6.19
/system ntp client> pr
enabled: yes
primary-ntp: 164.67.62.194
secondary-ntp: 64.250.229.100
mode: unicast
poll-interval: 16s
active-server: 164.67.62.194
Winbox use to allow a choice between unicast and broadcast but all I see now is unicast.